旋掠而过的火星尘暴

2023年11月7日

A Martian Dust Devil Spins By
Video Credit: NASA, JPL-Caltech, Perseverance Rover; AI processing: PipploIMP

Explanation: It moved across the surface of Mars — what was it? A dust devil. Such spinning columns of rising air are heated by the warm surface and are also common in warm and dry areas on planet Earth. Typically lasting only a few minutes, dust devils become visible as they pick up loose red-colored dust, leaving the darker and heavier sand beneath intact. Dust devils not only look cool — they can leave visible trails, and have been credited with unexpected cleanings of the surfaces of solar panels. The images in the featured AI-interpolated video were captured in early August by the Perseverance rover currently searching for signs of ancient life in Jezero Crater. The six-second time-lapse video encapsulates a real duration of just over one minute. Visible in the distance, the spinning dust devil was estimated to be passing by at about 20 kilometers per hour and extend up about 2 kilometers high.

Your Sky Surprise: What picture did APOD feature on your birthday? (post 1995)

Tomorrow’s picture: a new space telescope

旋掠而过的火星尘暴
影片提供: NASA, JPL-Caltech, Perseverance Rover; 影片处理AI: PipploIMP

说明: 它在火星表面移动，然而它是什么？尘卷风。这种受温暖表面加热而旋转上升的气柱，在地球热且干燥的地区也很常见。尘卷风通常只持续几分钟，当它们卷起松散的红色沙尘时才会现形，而下面颜色较深且较重的沙粒则完好无损。尘卷风不仅看起来很酷，它们还会留下鲜明的足痕，并曾意外的清扫了太阳能板的表面。这部经由人工智能插值的主题影片，所根植的影像，是由目前在耶杰罗坑内寻找远古生命迹证的毅力号火星车，摄于今年8月初。这部长6秒钟的延时视频，所压缩的实际期间超过1分钟。出现在这片视野远处的尘卷风，估计以每小时约20公里的速度飞掠，并垂直伸展了约2公里高。

您的天空惊喜: APOD在你生日那天展示了哪张照片？（1995年后）

明日的图片: a new space telescope